body{
    margin: 0px;
    padding: 0px;
}
.blog_a{
    display: inline-block;
    width: 80%;
    height: 60em;
    margin: 0px auto;
}
.blog_b1{
    width: 40%;
    height: 60em;
    float: left;
}
.blog_b2{
    width: 30%;
    height: 40em;
    float: right;
    margin-top: 150px;
    border-radius: 10px;
    background-color:#000000;
    background-color:rgba(0,0,0,0.2);
}
h1{
    text-align: center;
}
.input-group{
    padding: 60px 30px 40px 30px;
}
.btn-primary{
    background-color: gray;
    border-color: transparent;
    outline: none;
}